{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-25-048037","form_type":"8-K","ticker":"BY","cik":"0001702750","company_name":"BYLINE BANCORP, INC.","filed_at":"2025-04-01T23:59:59+00:00","discovered_at":"2026-05-14T18:02:49.395873+00:00","generated_at":"2026-05-24T00:51:15.162998+00:00","sec_items":["7.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Byline Bancorp completes $41.5M merger with First Security Bancorp, assets reach $9.8B","bullets":["Merger closed April 1, 2025; First Security merged into Byline Bank, adding scale in Chicago metro.","Total pro forma assets of approximately $9.8 billion as of December 31, 2024.","Each First Security common share exchanged for 2.3539 shares of BY common stock.","Total merger consideration valued at roughly $41.5 million; preferred shares redeemed for $2.4M cash.","CEO Roberto Herencia highlighted strengthened community banking position in Chicago."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-25-048037","json":"https://secwatch.observer/filing/0000950170-25-048037.json","markdown":"https://secwatch.observer/filing/0000950170-25-048037.md","text":"https://secwatch.observer/filing/0000950170-25-048037.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1702750/000095017025048037/0000950170-25-048037-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1702750/000095017025048037/by-20250401.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-24T00:51:15.162998+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}